The least positive value of k, for which the quadratic equation 2x^2 + kx - 4 = 0 has rational roots, is (A) \pm 2\... | MCQ 1m | Maths | SuperPadhai

Quadratic Equations > Question

MCQ1 markYear: 2023MediumCBSE Class 10

quadratic-equationsdiscriminantrational-roots

Question

The least positive value of

k

, for which the quadratic equation

2 x^{2} + k x - 4 = 0

has rational roots, is
(A)

\pm 22

(B)

2

(C)

\pm 2

(D)

2

Solution

1

(B)

2

+1 mark

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